import math
print(math.sin(3))
print(math.cos(4))
print(math.tan(3))
print(math.hypot(3.4))
print(math.sqrt(16))


# # 布尔型
# bi=True
# b5=False
# print(bi.b5)

print(2**3>2*3)
print(2*3>2**3)
#赋值运算
a=8
a+=2
a=a+2
var = 10
#比较运算
a1=4
b=5
print(a1==b)
print(a1!=b)
print(a1>b)
print(a1<b)
print(a1>=b)
print(a1<=b )


#逻辑运算
print(a+b>a-b and a+b<a-b )
print(a+b<a+b or a+b<a+b)
print(not  a+b>a+b)


#成员运算
ste="hello"
print("o"in ste)
print("e"in ste)
print("o"not in ste)
print("r"not in ste )

